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Finding the Fourth Proportional to 281,607.50, 422,411.79 and 68,374.51

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Solution

The fourth proportional to 281,607.50, 422,411.79 and 68,374.51 is: 102,561.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    281,607.50 : 422,411.79 = 68,374.51 : x
  2. Step 2: Convert to fraction form
    281,607.50/422,411.79 = 68,374.51/x
  3. Step 3: Cross multiply
    281,607.50x = 422,411.79 × 68,374.51
  4. Step 4: Simplify right side
    281,607.50x = 28,882,199,159.47
  5. Step 5: Solve for x
    x = 28,882,199,159.47/281,607.50
  6. Step 6: Final answer
    x = 102,561.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.